Skip to content
Skip to main content
Home/Generator/WEN GN625iX
WENModel GN625iX

WEN 5,000W Gas Generator Review

The WEN GN625iX is a 6250-watt RV and transfer-switch-ready open frame inverter generator featuring a 301cc 4-stroke OHV engine, clean power output suitable for sensitive electronics, a CO Shutdown Sensor for safety, and a 4.2-gallon gas tank providing up to 8.1 hours of half-load run time.

At a Glance

  • Running Watts
    5000W
  • Starting Watts
    6250W
  • Fuel Type
    Gasoline
  • Runtime (50%)
    8.1h
  • Noise Level
    77 dB
  • Weight
    119.5 lbs

Where to buy

Prices can change. We update these automatically.

    Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.

    Model Variations

    WEN GN625i
    Variant

    WEN GN625i

    See details for differences

    Is this the right generator for you?

    Here's the quick tradeoff view — what this model does well, and where it may not fit.

    Pros

    • 301cc 4-stroke OHV engine producing 6250 surge watts and 5000 rated watts
    • Clean power output with low total harmonic distortion, safe for sensitive electronics
    • WEN Watchdog CO Shutdown Sensor for automatic shutoff at dangerous CO levels
    • 4.2-gallon gas tank providing up to 8.1 hours of half-load run time
    • Multiple outlets including four 120V NEMA 5-20R, two 5V USB, one 120V/240V NEMA L14-30R twist lock, and one 120V RV-ready TT-30R receptacle
    • Eco-mode switch for fuel efficiency and noise reduction
    • Lightweight design, 30% lighter than traditional 6250-watt generators, with wheel and handle kit for portability
    • Low-oil shutdown, built-in overload protection, and indicator lights for safety

    Cons

    • No electric start feature
    • Relatively heavy weight for portability
    Best use cases
    Sensitive electronicsRV / campingHome backup

    Summary

    The WEN GN625iX is a gasoline generator built around inverter operation, delivering 5000 running watts with 6250 starting watts. That combination targets both steady power needs and the extra surge required when certain loads first kick on.

    With gasoline as its fuel source, the GN625iX keeps operation centered on a familiar refueling routine while pairing its wattage output with inverter-based power delivery.

    Power & Runtime

    Running on gasoline, the GN625iX provides 5000 running watts and 6250 starting watts, giving it a clear split between sustained output and short burst capability for startup demands. Its inverter design is backed by a 1.5 percent THD figure, which speaks directly to power quality for devices that benefit from cleaner electrical output.

    Noise is rated at 77 dBA, setting expectations for how present the generator will sound while operating. For runtime, WEN lists 8.1 hours at 50 percent load, and the generator carries a 4.2 gallon fuel tank to support longer stretches between refills.

    Portability

    At 119.5 lbs, the GN625iX is a substantial unit that favors a more deliberate approach to moving and placing it where power is needed. Its physical footprint is listed at 27 x 25 x 24 inches, which helps frame the space it will occupy in storage or at a jobsite or campsite setup.

    Features

    Starting is handled through a recoil system, keeping the setup straightforward and fully manual. Day to day monitoring is supported by a fuel gauge and built-in indicators, which can make it easier to track fuel status and operating conditions at a glance.

    The GN625iX is EPA compliant and includes RV-ready capability, aligning it with RV power needs without extra adaptation. Practical protection details include a spark arrestor and covered outlets, and automatic voltage regulation is present to help manage output stability. WEN also backs the unit with a 2-year warranty.

    Recommended Audiences

    • RV owners needing RV-ready power
    • Owners of sensitive electronics seeking clean inverter power
    • Shoppers who prefer gasoline-powered generators
    • Homeowners needing emergency backup for essential circuits
    Updated: Feb 24, 2026

    Score Breakdown

    5.3
    / 10
    Rank #25 of 66 in Inverter (5,000W+)
    Value (25%)
    Quality (25%)
    Practical (18%)
    Features (12%)
    Features (1.0 pts)
    • Inverter+1
    Percentile Rankings (within peer group)
    • Watts/$
    • Surge/$
    • Runtime/$
    • Warranty
    • THD (lower=better)
    • Build Quality
    • Noise (lower=better)
    • Portability
    • Outlet Variety
    • Feature Points
    Learn how we calculate scores · View all rankings

    What this generator can power

    At a Glance

    • Continuous:5,000W(recommended usable: 4,000W)
    • Surge:6,250W
    • Output:120/240V
    • Inverter:Yes (clean power for electronics)

    Big-item compatibility

    Refrigerator
    Yes
    Sump Pump (1/3 HP)
    Yes
    Well Pump (1 HP, 240V)
    Yes
    Furnace Blower
    Yes
    Central AC (3 Ton, 240V)
    Maybe

    May struggle with startup surge

    Window AC (10,000 BTU)
    Yes
    Electric Water Heater (240V)
    No

    Exceeds capacity

    Electric Range/Oven (240V)
    No

    Exceeds capacity

    Air Compressor (1 HP)
    Yes

    Example setups

    Essentials

    • Lights + Wi-Fi + Charging
    • Refrigerator
    • Furnace Blower
    • Sump Pump (1/3 HP)

    Est. running: 1,800W

    Peak surge (single motor): 2,000W

    Avoid starting multiple motor loads at the same time.

    Essentials + Comfort

    • Lights + Wi-Fi + Charging
    • Refrigerator
    • TV + Entertainment System
    • Microwave
    • Window AC (10,000 BTU)
    • Furnace Blower

    Est. running: 3,500W

    Peak surge (single motor): 2,000W

    Avoid starting multiple motor loads at the same time.

    Jobsite / Tools

    • Lights + Wi-Fi + Charging
    • Circular Saw (7 1/4")
    • Air Compressor (1 HP)

    Est. running: 3,100W

    Peak surge (single motor): 4,500W

    Avoid starting multiple motor loads at the same time.

    These are estimates using typical wattage assumptions. Real appliances vary. Startup surges can be 2–6× the running wattage for motor-driven loads. 240V loads require a 120/240V generator and proper connection. Use a transfer switch or interlock kit; never backfeed a panel.

    WEN
    ReliabilityC – Average

    About WEN

    WEN is renowned for delivering affordable, reliable generators and power equipment, catering to various residential and industrial needs.

    Founded1951
    HQElgin, Illinois, USA
    Website (opens in a new tab)
    Support1-847-429-9263
    Support / Manuals (opens in a new tab)
    View all WEN generators

    Warranty

    Coverage: 2 years

    Power by fuel

    FuelRunningStartingRuntime @50%Runtime @25%
    Gasoline5000W6250W8.1h—

    Full Specifications

    Power

    Running Watts5,000 watts
    Starting Watts6,250 watts
    Starting Watts (Gasoline)6,250 W
    Running Watts (Gasoline)5,000 W

    Engine

    Engine301 cc OHV 4-stroke
    Engine TypeOHV 4-stroke
    Engine Displacement301 cc
    Spark ArrestorYes
    Emissions ComplianceEPA

    Electrical

    Voltage (AC)120/240
    Voltage (DC)5
    Running Amps41.7/20.8 A
    Peak Amps52.1/26 A
    AC Frequency60 hz
    Current41.7/20.8 amps
    GFCI OutletsNo
    NeutralFloating
    USB Outlets2x 5V USB port (USB-A)
    DC Outlets2x 5V USB port (USB-A)
    AC Outlets2x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R) 1x 120/240V 30A (L14-30R)
    Total Harmonic Distortion (THD)1.5 %

    Dimensions

    Dimensions27 x 25 x 24 inches
    Weight119.5 lbs

    Other

    Automatic Low Oil ShutdownYes
    Emissions ComplianceEPA
    Automatic Voltage RegulationYes
    Automatic Voltage RegulatorYes
    Carbon Monoxide SensorYes
    Covered OutletsYes
    Electric StartNo
    Fuel GaugeYes
    Fuel Tank Capacity4.2 gallons
    Included AccessoriesTool kit, 2 altitude kits, and wheel kit
    IndicatorsYes
    InverterYes
    Noise Level77 dBA
    Overload ProtectionLow oil and overload protection
    Parallel CapableNo
    Recoil StartYes
    Remote StartNo
    RV ReadyYes
    Starter TypeRecoil
    Starting SystemRecoil
    UPC44,459,062,523
    Warranty2 years
    WheelsYes

    Core

    Fuel TypeGasoline

    Runtime

    Runtime @ 50%8.1 hours
    Runtime @ 50% Load (Gasoline)8.1 hours

    Questions & Answers

    0 questions
    Ask a question
    Loading questions…

    Ask a question

    Between 10 and 500 characters.0/500
    We'll only use this to notify you when it's answered.
    2-60 characters. This may be posted publicly with your question.

    Owner Reviews

    0 reviews
    Write a review
    Loading reviews...

    Write a review

    Describe your ownership experience. No links, prices, or retailer mentions.

    Checking sign-in...